can pretreat
Verbo regular: pretreat - pretreated- pretreated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can pretreat
you can pretreat
she can pretreat
we can pretreat
you can pretreat
they can pretreat 	I can be pretreating
you can be pretreating
she can be pretreating
we can be pretreating
you can be pretreating
they can be pretreating	I can have pretreated
you can have pretreated
she can have pretreated
we can have pretreated
you can have pretreated
they can have pretreated	I can have been pretreating
you can have been pretreating
she can have been pretreating
we can have been pretreating
you can have been pretreating
they can have been pretreating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot pretreat
you cannot pretreat
she cannot pretreat
we cannot pretreat
you cannot pretreat
they cannot pretreat 	I cannot be pretreating
you cannot be pretreating
she cannot be pretreating
we cannot be pretreating
you cannot be pretreating
they cannot be pretreating	I cannot have pretreated
you cannot have pretreated
she cannot have pretreated
we cannot have pretreated
you cannot have pretreated
they cannot have pretreated	I cannot have been pretreating
you cannot have been pretreating
she cannot have been pretreating
we cannot have been pretreating
you cannot have been pretreating
they cannot have been pretreating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I pretreat?
can you pretreat?
can she pretreat?
can we pretreat?
can you pretreat?
can they pretreat? 	can I be pretreating?
can you be pretreating?
can she be pretreating?
can we be pretreating?
can you be pretreating?
can they be pretreating? 	can I have pretreated?
can you have pretreated?
can she have pretreated?
can we have pretreated?
can you have pretreated?
can they have pretreated? 	can I have been pretreating?
can you have been pretreating?
can she have been pretreating?
can we have been pretreating?
can you have been pretreating?
can they have been pretreating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not pretreat?
can you not pretreat?
can she not pretreat?
can we not pretreat?
can you not pretreat?
can they not pretreat? 	can I not be pretreating?
can you not be pretreating?
can she not be pretreating?
can we not be pretreating?
can you not be pretreating?
can they not be pretreating? 	can I not have pretreated?
can you not have pretreated?
can she not have pretreated?
can we not have pretreated?
can you not have pretreated?
can they not have pretreated? 	can I not have been pretreating?
can you not have been pretreating?
can she not have been pretreating?
can we not have been pretreating?
can you not have been pretreating?
can they not have been pretreating?